[On the problem of assessment of the degree of severity of several types of agricultural work in occupational training].
D000293:Adolescent; D000383:Agriculture; D006801:Humans; D009787:Occupational Medicine; D014829:Vocational Education
K voprosu ob otsenke tiazhesti nekotorykh vidov sel'skokhoziaĭstvennykh rabot pri trudovom obuchenii.